Thomas whalby



UNITED STATES THOMAS VVHALEY, OF ASPEN, COLORADO, ASSIGNOR OF ON E-H ALF TO JAMES E. MCGREW AND GEORGE D. JOHNSTONE, BOTH OF SAME PLACE.

LINE-SPACING DEVICE FOR TYPE-WRITING MACHINES.

SPECIFICATION forming part of Letters Patent No. 345,347, dated July 13, 1886.

Application tiled August 5, 1865.

T all whom, it may concern: Y

Be it knownthat I, TrroMAs WHALEY, a citizen of the United States,residing at Aspen, in the county of Pitkin and State of Colorado, have invented a new and useful Improvement in Line-Spacing Devices to be used on Type- Writing Machines, of which the following is a specification.

My invention relates to improvements in type-writing machines, in which machines a roller or paper-carrier, in connection with a ratchet-wheel operated upon by a lever and pawl, is so constructed and worked as to revolve the roller and carry the paper in one direction, so that where a lineis printed and the roller moved,the roller and paper cannot then be reversed and turned back,the line re-written or corrected, without removing the paper from the roller, except the paper be. drawn 2O back with the hand,which is not done with accuracy and speed.

The object of my improvement is to provide a means -by which said roller may,by the same lever,be moved forward or reversed,and thereby the paper be carried in either direction at the will of -the operator on the said machines,and thereby facilitatethe correcting of errors and provide a speedy method or means of interlineation. I attain this object by the 3o mechanism illustrated in the accompanying drawings, in which- Figure 1 is an inside end view of the lever, pawls, space-regulator, and ratchetwheel with combination or machine set by reason of the regulator' D for single spacing; Fig. 2, the same as above, except that space-regulator D is set for double spacing; Fig. 3, a detailed view, in perspective, of the lever, space-regulator, ratchet-wheel, and a section of roller; 4o Fig. 4, an outside view showing pawl-'pins G and pawl-guide F, orthe frame-work of this part of the machine, to which are added shoulders or pawl-guides; Fig. 5, top of type-writing machine as it looks looking down on the top of ratchet-wheel; Fig. 6, a part view of the type- Serial No. 173,633. (No modo.)

raiscd,as shown in dotted lines, Fig. 1, moves the pawl C forward,so that the pawl O, acting on ratchet-wheel and roller E,turns said wheel 5 5 and roller, thereby carrying the paper in the direction marked by arrow 2. Pressing lever A downward, as shown in heavylines, Fig. l, moves pawl B forward, which, acting on ratchet-wheel and rollenE, turns'said wheel 60 and roller in the direction' marked by arrow 1.

D is a spaceregulator, which, when in position as in Fig. l, permits lever A to fall into the position shown in heavy lines, or rise, as shown in dotted lines,the distance required to allow pawls B and C to move forward or backward one notch or cog on the ratchet-wheel E. Vhen in position as in Fig. 2, it permits the same movements the distance of two notches or eogs, and thus at the same time regulates 7@ the distance ratchet-wheel,and roller E may be moved by a single motion of leverA in either direction. Space regulator D, also, by its shape and construction, prevents the rising and falling of lever A beyond given distances. 7 5 Pawlpins G and G, acting on shoulders of pawlguide F, Fig. 4, elevate or lower the points of pawls B and lO, according to the direction in which lever A is/lmoved,thus allow-'- ing but one pawl to act at the same time. 30 When pawl B acts or turns ratchet-wheel E, pawl() is raised free and clear of wheel E. NVhen pawl C acts upon wheel E, pawl B is carried from wheel E by reason of pawl-pins G and G and their movements on the shonlders of pawl-guide F.

Pawl-guide F,Fig. 4, while acting as aframe forsupporting the several parts of the machine, is constructed with two shoulders, upon which the said pawl-pinsG and G move. Pawl 9o J, to which, however, I lay no claim, is so shaped that the ratchet-wheel can turn either way, and is simply to hold the roller firmly when not in motion.

H in Fig. t is a spring for the purpose of 95 holding space-regulator l) in position.

My new lever differs from the levers now and heretofore used on typewriting machines, as shown in Fig. 6, in this, that it works two ratchets or pawls, as herein set forth, thereby Ico turning the paper-roller in either of two directions instead of one, as before; the improved space-regulator in this, that it regnlates the distance the lever may be moved in either direction, and thus dispense with the pin Y, Fig. 6, as the one nowin use requires. Its convenience and adaptability will be apparent from comparison of Y in Fig. 6 with D in the othergures.

I am aware that prior to my invention a lever, ratchet-Wheel,and space-regulator have been used on typewriting machines. I there# fore do not claim these machines as constructed and used heretofore; but

What I do claim as my invention,and desire to secure by Letters Patent, is

1. The combination, in type-Writing machines, of the paper-roller with the doub1e-act ing lever A, pawls B and C, connected there- THOMAS WHALEY.

W'itnesses:

M. M. DONNELLY, ALONZO F. BARDWELL. 

